Rust Stable for Xous

Build stable Rust binaries for Xous! This release targets Rust 1.79.0.

Installing Prebuilt Releases

1. Ensure you are running Rust 1.79.0. Future versions of Rust will need a different version of this software.
2. Download the latest release from the releases page
3. Unzip the zipfile to your Rust sysroot. On Unix systems can do this with something like:

cd $(rustc --print sysroot)
wget https://github.com/betrusted-io/rust/releases/latest/download/riscv32imac-unknown-xous_1.79.0.zip
rm -rf lib/rustlib/riscv32imac-unknown-xous-elf # Remove any existing version
unzip *.zip
rm *.zip
cd -

On Windows with Powershell you can run:

Push-Location $(rustc --print sysroot)
if (Test-Path lib\rustlib\riscv32imac-unknown-xous-elf) { Remove-Item -Recurse -Force lib\rustlib\riscv32imac-unknown-xous-elf }
Invoke-WebRequest -Uri https://github.com/betrusted-io/rust/releases/latest/download/riscv32imac-unknown-xous_1.79.0.zip -Outfile toolchain.zip
Expand-Archive -DestinationPath . -Path toolchain.zip
Remove-Item toolchain.zip
Pop-Location

Building From Source

1. Install a RISC-V toolchain, and ensure it's in your path. Set CC and AR to point to the toolchain's -gcc and -ar binaries.
2. Ensure the rust submodule is checked out. Run git submodule update --init. You do not need to do a recursive init.
3. Run ./rebuild.sh. This will build libstd and install it.

Building on Windows Powershell

On Windows, you can use the rebuild.ps1 script to build and install this package. You will need to have a Riscv compiler in your path.

Run rebuild.ps1. It is recommended that you run it under a new shell in order to avoid polluting your environment with Rust-specific variables:

powershell .\rebuild.ps1